Meaning of hail mary

http://www.cuf.org/2008/09/praying-the-hail-mary-like-never-before/
http://christianity.stackexchange.com/questions/995/what-exactly-is-a-hail-mary

https://www.gotquestions.org/Hail-Mary.html

https://www.catholic.com/tract/the-rosary

http://www.holysouls.com/hailmary.htm